Doorknob



April 12, 1932. w. R. scHLAGE DOORKNOB Filed Jan. l1, 1928 E WN m T VIT NVENTOR. 1L/altem mic/Mago,

Patented Apr. 12, 1932 UNITED STATES PATENT OFFICE WALTER R. SCHLAGE, OF SAN FRANCISCO,

COMPANY, OF SAN CALIFORNIA, ASSIGNOR T SCHLAGE LOCK FRANCISCO, CALIFORNIA, A CORPORATION OF CALIFORNIA DOORKNOB Application 1ed January 11, 1928. Serial No. 245,900.

This invention relates to a door knob and especially to a knob which is particularly constructed for the reception and retentlon of a spindle and a key actuated locking mechanism.

The object of the present invention is to generally improve andsimplify the construction andoperation of door knobs; to provide a door knob consisting of tWo separable sections which are so constructed that a tubular spindle may be readily centered and secured with relation to the separable sections; to provide a knob and a tubular spindle which is adapted to receiveand enclose a key actuated locking mechanism; and further to provide a locking plate and a cooperating latching mechanism whereby the separable sections of the knob, the key actuated locking mechanism and the spindle may be interlocked and rigidly secured with relation to each other. The invention is shown by Way of illustration in the accompanying drawings in which:

Fig. l is a central longitudinal section of the knob and the spindle, said View showing the key actuated locking mechanism and an auxiliary spindle actuated thereby in side elevation,

Fig. 2 is a similar view taken at right angles to Fig. 1,

Fig. 3 is a perspective view of the latching mechanism,

Fig. 4 is a perspective View of the locking plate,

Fig. 5 is a perspective vievv of the inner separable section of the knob,

Fig. 6 is a perspective View of the key actuated locking mechanism,

Fig. is a perspective View of the auxiliary i spindle,

Fig. 8 spindle,

Fig. 9 is aperspective view of the knob showingthe inner separable section removed.

Referring to the drawings in detail and particularly Figs. l, 5 and 9, a door knob is illustrated which is constructed of three sections, such as indicated at A, B and C. The sect-ions A and B are secured with relation to each other, for instance by pressing, spinis a perspective view of the knob ning, or otherwise While the section C is separable and removable with relation to the sections A and B, as will hereinafter be described. The knob is especially constructed for the reception of a knob spindle D and a key actuated locking mechanism generally indicated at E. The outer .end of the key actuated locking mechanism projects through the face of the knob or the outer section indicated at A, and a central opening 2 is accordingly required so that a key may be inserted to actuate the locking mechanism. The opening 2 is central With relation to the-knob and it may be formed in any suitable manner, for instance by punching and pressing an inturned flange 3. This flange serves tvvo functions, first that of centering the knob spindle D with relation to the section A of the knob, and secondly, that of centering and supporting the projecting end 4 of the housing or locking mechanism The knob spindle D is also centered at the opposite end of the knob by an inwardly projecting annular flange 5 which is formed as a. part of the knob section B. In fact the knob section B consists of an annular rounded section 6, an end plate 7 and the annular flange 5. The knob section A is pressed or spun over the section 6, as indicated at 8, and it is in this manner that the sections A and B are permanently and rigidly secured one With relation to the other. An annular shoulder 9 is formed between the end plate 7 and the annular rounded section 6 and this shoulder serves the function of centering the separable section C of theknob, this section being best illustrated in Figs. l and 5. The separable section consists of an annular flange or hub member 10 which is slidable on the spindle D. The hub 10 is expanded, as indicated at 11, and it terminates in an enlarged annular flange 12 which enters the seat formed by the annular shoulder.

The sections A and B of the knob, as already stated, are permanently and rigidly Asecured with relation to each other, While the section C may be removed Whenever desired. The spindle D may also be removed and so may the key actuated locking mechanism, indicate-d at E. Means are, however, provided for rigidly securing these members with relation to the knob sections A and B but this will later be described. The spindle D is best illustrated in Fig. 8. It consists of a tubular section, as illustrated, on the inner end of which is formed a rollback member 14. The central portion is provided with an elongated slot 15 and a narrow slot 16, While the end is provided with two oppositely disposed slots 17 and 18. The hub or annular [lange 5 of the knob section B is perhaps best illustrated in Fig. 9. It is provided with a pair of narrow slots 16a'I and 166 which are adapted to register one at a time with the slot 16 of the spindle D. A hub section 5 is also longitudinally slotted as indicated at 19 and this slot is extended into the end plate 7, as indicated at 20. The end plate 7 is also provided with two opposed slots, as indicated at 21 which align with the slots 16a and 16?).

The key actuated mechanism is best illustrated in Fig. 6. Any type of mechanism may be employed but a standard form of pin tumbler lock is illustrated. Such a lock usually consists of a cylindrical housing 22 on one side of which is formed an extension 23 for the reception of the pin tumblers. The usual cylinder extends through the housing E and is the member which is slotted to receive the key. The cylinder is in this instance shown as extending aslight distance beyond the housing and is indicated at 4. The opposite end of the cylinder is provided with a cam plate 4a and this is secured to the cylinder by screws 4b or the like, for instance when a key is inserted in the cylinder B, the pin tumblers are depressed and the cylinder may be rotated by means of the key and as the cam member 4a is secured to the cylinder, this will rotate in unison. In the present instance, the cam member is shown as notched on opposite sides, as indicated at 25. These notches are provided for the reception of lugs 26 which are formed on the inner end of an auxiliary spindle, indicated at F (see Fig. 7). This spindle is tubular and the opposite end is provided with a rollback member 27. The auxiliary spindle lies Within the knob spindle D and is rotatable therein. The inner end of the auxiliary spindle interlocks with the cam member 4a through means of the end lugs 26. It is obvious that the auxiliary spindle will be rotated by the key and the cylinder to which the cam member 4a is secured. In other words, the auxiliary spindle is merely actuated by the key mechanism while the knob spindle is actuated by the knob proper, as will hereinafter be described.

Figs. 4 and 3 respectively illustrate a locking-plate and a spring latch. The function of the locking plateis to key or secure the knob spindle D with relation to the knob,

While the spring latch serves the function of holding the locking plate in position and also that of securing the separable section C of the knob with relation to the permanently secured sections A and B. The locking/plate is rounded at itsl lower end as indicated at 30 to fit the contour of the cylinder E. The opposite end of the plate is provided with two upwardly projecting lugs 31 which are adapted'to embrace the inner end of the spring latch 32. The interlock between the two members is best shown in Fig. 3, i. e., the inner end of the spring latch 32 is enlarged and provided with notches 33 in its opposite 4sides to receive the lugs 31. This forms the interlock between the plate 30 and the spring latch. The spring latch is otherwise provided with a latch member 34 at its inner end and the opposite end is provided with a projection or tongue 35 which will hereinafter be referred to.

The several parts of the mechanism so far described are assembled as follows:

The knob sections A and B are assembled in the factory, as such are permanently secured with relation to each other, and when so assembled assume the appearance shown in F ig. 9. The separable section C .is next slipped over the end of the spindle D and it is moved along the spindle until it engages with the rollback 14. The housing E has a diam-eter which permits it to be inserted in the outer end of the spindle.- It fits snugly therein and the extension 23 of the housing E will in that instance project through one of the slots 17 or 18, as shown in Fig. 1. The spindle D having the key actuated locking mechanism inserted in one end and the separable housing section C placed on its opposite end is inserted in the assembled knob sections A and.B. When so inserted, it assumes the position shown in Fig. 1, the spindle being centered first by the hub or annular flange section 5 and secondly by the inturned flange 3. The projection 23 on the lock housing will, during the insertion. pass through the slots 19 and 20 and it will assume an intermediate position between the sections A and B, as shown in Fig. 1. When the spindle is fully inserted it will be found that the short slot 16 will register either with the slot 16a or the slot 16?) of the hub member 5. lWhen this register is obtained, the locking plate, shown in Fig. 4, is inserted as shown in Fig. 2. The locking plate thus passes through the spindle and the hub 5 and as such locks the knob against endwise movement and against turning movement on the spindle. Itis necessary to secure the locking plate against accidental removal when it is so inserted and it is, accordingly, necessary to provide the latching member shown in Fig. 3. The inner end of the latching vmember or tongue, shown at 35, is inserted in one of the slots 21. The enlarged portion @having notches 33 is interlocked with the lugs 31 and the inwardly extending portion 32 willlie in the slot 15 (see Figs. 2 and 8). It

- is now. only necessary to slip the separable section C outwardly on the spindle until the annular shoulder 12 enters the recess formed by the annular shoulder 91 When the shoulder 12 is fully seated therein, latch 34 sprmgs out and engages the inner end of the hub 10 and the several members are finally mterlocked, i. c., the knob sections A and B are locked against turning movement and endwise movement on the spindle D by means of the plate 80. This in turn is held 1n locklng position by means of the spring latch, and the spring latch in turn engages the outer end of the'hub 10 thus securing the separable section C ofthe knob against endwlse movement on the spindle. The auxiliary spindle F may now be insertedendwise through the spindle D, as shown in Figs. 1 and 2, and the moment an interlock is formed between the cam -member 4a and the lugs 26, the entire unit is ready for insertion and assembly with the remaining parts of the mechanism which are not illustrated. The mechanism not illustrated usually consists of a lock housing carrying a bolt and a retractor. l The retractor is actuated by the rollback 14 when the knob is turned or it may be actuated by the insertion of a key which rotates the cylinder and the auxiliary spindle F, as this is also provided with a rollback, as shown at 27. The4 retractor when actuated reciprocates the bolt and the door may thus be opened or locked, as the case may be, either by the knob or the key actuated mechanism carried by the knob. The knob may be employed either on the outside 0r the inside of the door, but preferably on the outside. When placed on the outside, it is of course, essential that thelatch 34 be covered so that it cannot be depressed by an unauthorized person. One practical method of covering the 'latch 34 so that it may not be tampered with is vto employ an escutcheon plate, such as indicated by dotted lines at 40. The escutcheon plate is in turn provided with a hub or bearing section 41. This extendsv over the hub section l0 of the separable knob section C and as such completely covers the latch 34 so that it cannot be tampered with. The escutcheon plate 40 is of course secured from the inside of the door and it can thus only be removed by an authorized person. An authorized person may7 release the escutcheon plate from the inside and thus remove the same and When it is removed, it is only necessary to push the latch 34 inwardly, for instance with the point of a screw driver or like instrument. lVhen this is pushed inwardly, the section C-of the knob may be slipped inwardly on the spindle D, thus exposing the locking plate 30 and permitting its removal. lVhen the locking plate is r-emoved the knob may be slipped off and the locking mechanism or housing E' may also be removed. It is, accordingly, a comparatively simple matter for an authorized person to either assemble or remove the mechanism described.

While certain features of the present invention are more or less specifically described, I wish it understood that various changes may be resorted to within the scope of the appended claims. Similarly, that the materials and finishes of the several parts employed may be such as the manufacturer may decide or varying conditions or uses may demand.

Having thus described my invention, what I claim and desire to secure by Letters Patent is: v

'1. A door knob comprising a main section and a separable section, a removable spindle extending through the separable section and into the main section, and means for locking the spindle and the separable section against removalwith relation'to the main section.

2. A door knob comprising a main section and a separable section, a removable spindle extending through` the separable section and into the main section, and means for locking the spindle and the separable section against removal with relation to the main section, said 'separable section covering and enclosing the locking means.

3. A door knob comprising a main section and a separable section, a removable spindle extending through the separable section and into the main Section, and means for locking the spindle against rotation and endwise movement with relation to the main section, said means also locking the separable section against longitudinal movement with relation tothe main section.

4. A door knob comprising a main section and a separable section, a removable spindle extending through the separable section and into the main section, and means for locking the spindle against y .rotation and endwise movement with relation to the main section, said means also locking the separable section against longitudinal movement with relation to the main section, said separable section covering and enclosing said locking means.

5. A door knob comprising a main section and a separable section, a removable spindle extending through the separable section and into the main section, said main section and spindle having registering slots formed therein, a locking plate insertable in said slots and securing the spindle against rotation and longitudinal movement with relation to the main section, and a spring latch cooperating with the locking plate and securing the locking plate against removal, said spring latch also engaging the separable section and securing it against longitudinal movement with relation to the main section and the spindle.

6. A door knob comprising a main section and a separable section, a removable spindle extending through the separable section and Ainto the main section, a key actuated locking mechanism mounted within the spindle and insertable with the spindle to assume a position within the main section, and means for locking the spindle and the key actuated locking mechanism against rotation and endwise movement with relation to the main section, said means also securing'the separable section against longitudinal movement with relation to the main section and the spindle.

7. A door knob comprising a main section and a separable section, a removable spindle extending through the separable section and into the main section, a key actuated locking mechanism mounted Within the spindle and insertable with the spindle to assume a position within the main section, means for locking the spindle and the key actuated locking mechanism against rotation and endwise movement with relation Ito the main section, said means also securing the separable section against longitudinal movement with relation to the main section and the spindle, an auxiliary spindle Within the main spindle and rotatable therein, and means actuated by the key actuatedlocking mechanism for imparting a rotary movement to the auxiliary spindle.

8. In a knob of the character described a spindle extending into the knob, said spindle aving a pair of opposed slots formed therein in the end Which extends into the knob, a key actuated locking mechanism insertable in the slotted end of the spindle and having a projecticn adapted to extend through one of said slots, said key actuated mechanism being adapted to be rotated Within the spindle 180 so that the projection may extendv through the other slot in the spindle, and means for locking the spindle and the key actuated locking mechanism against rotation and longitudinal movement With relation to thekno 9. In a knob of the character described, a spindle extending into the knob, said spindle having a longitudinally disposed slot formed therein in the end which extends into the knob; a key actuated locking mechanism insertable in the slotted end of the spindle and having a projection which extends through the slot in the spindle ;"and means for locking the spindle and the key actuated mechanism against rotation with relation to the knob.

10. In a knob of the character described, a spindle extending into the knob, said spindle having a longitudinally disposed slot formed therein in the end which extends into the knob; a key actuated locking mechanism inl in its outer surface, a hub member formed on the inner surface of the knob; a spindle member extending throu h the hub and into the knob, the inner end o the spindle having a longitudinally extending slot formed therein; a key actuated locking mechanism insertable in the slotted inner end of the spindle and having a projection extending through the slot; and means for locking the spindle and the key actuated mechanism against rotation With relation to the knob.

l2. In a device of the character described, a door knob having a central opening formed in its outer surface, fa hub member formed on the inner surface of the knob; a spindle member extending through the hub and into the knob, theinner end o? the spindle having a longitudinally extending slot formed therein; a key actuated locking mechanism insertable in the slotted inner end of the spindle and having a projection extending through the slot; means for centering the key actuated mechanismand the inner end of the spindle with relation to the central opening in the outer surface of the knob; and means for locking the spindle and the key actuated mechanism with relation to the knob.

13. In a knob of the character described. a spindle extending into the knob, said spindle having a longitudinally disposed slot formed therein in the end which extends into the knob; a key actuated locking mechanism insertable in the slotted end of the spindle and having a projection which extends through the slot in the spindle; means for locking the spindle and the key actuated mechanism against rotation with relation to theiknob; a seconda-ry spindle mounted Within the first named spindle; and means operated by the key actuated mechanism for imparting rotation to the secondary spindle.

14. In a knob of the character described a spindle extending into the knob; said spindlev having a longitudinally disposed slot formed therein in the end which extends into the knob; a key actuated locking mechanism insertable in the slotted end of the spindle and having a projection which extends through the slot in the spindle; means for locking the spindle and the key actuated mechanism against rotation with relation to the knob; a secondary spindle carried by the first named spindle and means operated by the key actuated mechanism for imparting movement to the secondary spindle.

15. In a structure of the character described a spindle having a longitudinally disposed slot formed in one end thereof, a key actuated locking mechanism insertable in the slotted end of the spindle, and a projection on the key actuated locking mechanism' which extends through the slot in the spindle and thereby secures the key actuated locking mechanism against rotation with relation to the spindle.

16.- In a structure of the character described a knob having a hub member a spindle extending into the knob, said spindle having a longitudinally disposed slot formed therein, and in the end which extends into the knob, a key actuated locking mechanism insertable in the slotted end of the spindle and having a projection which extends through the slot in the spindle, and means for locking the spindle and the key actuated mechanism against longitudinal movement with relation to each other and with relation to the knob.

17. A door knob comprising a main section and a separable section, a removable spindle extending through the separable section and into the main section, said separable section having a hub member formed thereon through which the spindle extends, means carried by the separable section for locking the spindle against rotation and endwise movement'with relation to the main section, said means also locking the separable section against longitudinal movement with relation to the spindle and the main housing, said separable section and the hub member formed thereon covering and enclosing said looking means, an escutcheon plate, and a hub member thereon enclosing the hub member on the separable section.

WALTER R. SCHLAGE. 

